20409448190 has 16 divisors (see below), whose sum is σ = 37591356528. Its totient is φ = 7973923776.

The previous prime is 20409448183. The next prime is 20409448193. The reversal of 20409448190 is 9184490402.

It is a super-2 number, since 2×20409448190² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20409448193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23731487 + ... + 23732346.

It is an arithmetic number, because the mean of its divisors is an integer number (2349459783).

Almost surely, 2^20409448190 is an apocalyptic number.

20409448190 is a deficient number, since it is larger than the sum of its proper divisors (17181908338).

20409448190 is a wasteful number, since it uses less digits than its factorization.

20409448190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47463883.

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 20409448190 in words is "twenty billion, four hundred nine million, four hundred forty-eight thousand, one hundred ninety".